I've searched the archives for this one and haven't found an answer.

I've added some categories without a problem. I'm also able to modify them.

However whenever I try to add a link to one of these categories I get: Category (Invalid format)

When I do a Check Cat. from the Admin.cgi screen it comes up with: "There were no problems found!"

I thought it was because I was using all CAPS but even when I switched to something like: My_Category it still gives me an error.

Any ideas? Thanks!